| abstract |
(57) [Summary] [Structure] General formula [Chemical formula 1] (R 1 is H or CH 3 , R 2 is a hydrogen atom, an alkyl group or an alkoxyalkyl group, and R 3 is an alkyl group or an alkoxyalkyl group), and the intrinsic viscosity [η] is (27 ° C, tetrahydrofuran) is 0.01 to 6.0, and the transition temperature in water is 10 to 37 ° C. It is a vascular embolic agent composed of an aqueous solution containing a concentration of ˜50% by weight. [Effect] It has excellent safety such as no harmful side effects and no risk due to organic solvents, and is suitable for use in endovascular surgery. |